Update app.py

app.py

@@ -204,6 +204,14 @@ def chat_respond(message: str, history):
 # GRADIO UI
 # -----------------------------
 
+description = """
+Ask questions as if you were talking to a knowledge base assistant.
+
+In a real scenario, this assistant would be connected to your own
+help center or internal documentation. Here, it's using a small demo
+knowledge base to show how retrieval-based self-service can work.
+"""
+
 chat = gr.ChatInterface(
     fn=chat_respond,
     title="Self-Service KB Assistant",